A year ago last summer, my red maple looked as if the leaves had been burned. It then lost all its leaves long before my other two maples. I feared that I had lost this magnificent tree, but it came back in full bloom this year. What could have caused this?
It sounds like leaf scorch, a condition caused by high temperatures in late July and August. Leaf scorch causes the leaf margins or the tissue between the veins to turn brown. If the tree is in good condition, it will rebound the next spring.
Last 7 Days
How should I care for my indoor cyclamens and azaleas?
These plants as houseplants require a cool environment, preferably around 60 degrees F. They both require a lot of moisture and are best watered from the bottom.
When should I plant my hydrangeas?
The cool weather of fall is the ideal time for planting almost every kind of perennial, including hydrangeas. However, since the season is over, we would suggest planting in early spring.
How do peas differ from beans?
Both peas and beans belong to the legume family (Leguminosae or Fabaceae), which means that they both fix nitrogen in the soil, making it available to other garden plants. They differ mostly in their seedpods. Most peas are seeds produced in a bladderlike pod. The exception is snow peas, which are produced in a fleshy pod that is also eaten. Beans can be either seeds that grow in a fleshy pod or the entire pod. Peas do better than beans at cooler temperatures.
Will the salt that I use to melt ice on my driveway harm the plants in the adjacent flower beds?
That depends on how liberally you apply the salt and how you spread it. If the salt penetrates below the plants' root zone, it's essential to keep the soil moist. If at all possible, continue to water the bed during the winter. The best advice is to protect your flower beds with a thick layer of mulch, which will prevent salt contamination.
Why do some leaves on my rhododendron have brown spots?
Random brown spots on older leaves are likely caused by a fungus. Unless widespread, they are not a cause for concern. Some cultivars or hybrids are resistant. Try the cultivars 'Solidarity', 'Caroline', and 'Mardi Gras', as well as the species hyperythrum, yakushimanum or degronianum.
I've kept my amaryllis growing since it bloomed last winter. How can I get it to bloom again?
The bulb needs to go through a dormant period. Ideally, you would taper off watering in September, then store the bulb dry in a cool, frost-free place for 60 to 90 days. At the end of the dormant period, replace the top one to two inches of soil with compost. Water thoroughly and bring the pot to room temperature. Your amaryllis should bloom in six to eight weeks.
How can I make my amaryllis stronger so that the stalk doesn't bend over?
If you grow your amaryllis in a very warm room, the flower stalk will probably require staking. Just insert one next to the stalk, taking care not to disturb the bulb in the container. Amaryllis bulbs may not bloom if they are in too large a pot. There should be no more than one inch of space on each side of the bulb. At least one third of the bulb should be above the soil line.